Staff Answer
May 18, 2026 - 11:39 AM
There are various support articles and videos to help with this, the first would be the training module Three-phase & Parallel installation which is part of Victron Professional. This is a 27 minute long video and is available to anyone but you have to make a log in for yourself to be able to access the site. Most of the time is spent on programming, In addition Parallel, split- and three-phase VE.Bus systems are covered in their own Victron manual with additional info in the Wiring Unlimited book. (Section 6 covers AC Wiring) We also cover this in our own PKYS Blog Post Setting up parallel and split phase systems using the Victron MultiPlus and Quattro inverter chargers
Much of the above is devoted to programming and setup because that is where most of the confusion happens. The AC Input Wiring is pretty straightforward and it is easier if you make a junction box to distribute the wiring to the individual units. Pay attention to make the wiring to each unit identical so they get the same power and experience the same voltage drop. A drawing is shown below, which just shows the input wiring.
Much of the above is devoted to programming and setup because that is where most of the confusion happens. The AC Input Wiring is pretty straightforward and it is easier if you make a junction box to distribute the wiring to the individual units. Pay attention to make the wiring to each unit identical so they get the same power and experience the same voltage drop. A drawing is shown below, which just shows the input wiring.
